ESCI 444Exploration Geophysics II Reflection Seismic Data Processing

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ESCI 444-Exploration Geophysics IIReflection
Seismic Data Processing
Spring, 2007

• Steve H. Danbom, Ph.D., P.G.
• Adjunct Professor
• Office - Room 206A
• Office Hours By Appointment

Lecture Week 9 Processing seismic
reflections post-stack processes
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(No Transcript)
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If reflection seismic data could be acquired to
mimic the velocity log, then the frequency
content would have to include both low and high
frequencies.
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A post-stack inversion of the seismic trace
matches the well log for the 8-80 Hz frequencies
of the seismic data but lacks the broader
bandwidth to make a better match.
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From the acoustic impedance log of the well, one
can derive raw and filtered reflectivity series,
which, when convolved with the seismic wavelet,
makes the seismic reflection trace.
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This illustrates what the acoustic impedance log
might look like when inverted from seismic data
of varying bandwidth.
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The effect of applying varying phase rotation to
the inverted seismic trace is illustrated here.
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From Oz Yilmaz p. 1862
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From Oz Yilmaz p. 1864